In situ imaging of polymer melt spreading with a high-temperature atomic force microscope
In situ imaging of polymer melt spreading with a high-temperature atomic force microscope
复制标题
用高温原子力显微镜对聚合物熔体铺展进行原位成像
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
R. Superfine
中科院分区：
文献类型：
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作者：
D. Glick;P. Thiansathaporn;R. Superfine
我们已经开发了一种在高温下用原子力显微镜成像的方法，使用激光将热量传递到AFM尖端-样品结周围的局部区域。我们将大约75 mW的氩离子激光耦合到有源区域，将100 nm金膜的温度提高到225°C左右。作为样品，我们使用1.2 μm聚苯乙烯球吸附在薄膜上。我们在一个小时的时间里，就地拍摄这些球体的流动。聚合物的扩散动力学与前驱体膜的干燥扩散一致。
We have developed a method of imaging at high temperatures with atomic force microscopy using a laser to deliver heat to an area localized around the AFM tip–sample junction. We couple approximately 75 mW from an argon-ion laser into the active region to raise the temperature of a 100 nm gold film to around 225 °C. As a sample, we use 1.2 μm polystyrene spheres adsorbed onto the film. We image the flow of these spheres, in situ, over the course of an hour. The dynamics of the polymer spreading is shown to be consistent with the dry spreading of a precursor film.